Doorcheck and the like



Dec. 4, 1923."

A. .JAGMIN DOORCHECK AND THE LIKE Filed July 1. 1921 s sheets-heet 1 11|| \ll IIIIII jwra filter? Dec. 4 1923.

A. JAGMIN DooRoHEcK AND THE LIKE Filed July 1', 1921 3 Sheets-Sheet 2 Dec; 4, 1923. 1,476,159

I A. JAGMlN DOORCHEGK AND THE' LIKE Filed July 1, 1921 s Sheets-Sheet 5 QB Jfiww m'fiar qfihg y W through a door check'embodying 'thefea tures of the present invention, showing the foregoing results in Patented Dec. 4, 1923..

' UNITED sraji. r

ADOLPH JAGMIN,.OF CICERO, ILLINOIS.

YDOORCI-IECKV AND LIKE.

Application filed. July 1, 1921. Serial No. 481,917.

To all whom it may concern I Be it known that I, 'ADOLPH JAGIVHN, a citizen of the United States, residing at Cicero, in the county of Cook and State of of the invention may also be used to advan-' .tage in connection with checks used for other purposes. Therefore, I do not intend to limit myself to the use of the features of the invention in connection with door checks, except as I may do so in the claims.

Owing, however, tothe fact that the features are very well adapted for use in connection with door checks, I haveillustrated and will describe said features particularly as used for this purpose. 7

One of the features of the present invention relates to the provision in door checks of means whereby the check may be locked,- so as to prevent the opening of the door by unauthorized persons.- More particularly in this connection, a feature is to .provide means permitting the adjustment of the door check into such positions that the door may-be partially opened, but so as to limit the amount of opening movement to prevent the unauthorized person from actually passing through the door opening. Still more particularly another object is to accomplish the door checks.

Another object of the invention is to provide in devices of this kind means for limit ing the rate of closing movement'of the door. Other objects and uses of the invention will appearfrom a detailed description of the same, which consists in the features of construction and combinations of parts here-.

inafter described and claimed.

In the drawings: Y Figure 1 shows a longitudinal section plunger'in retracted position by means of fullfllines and in fully closed position by means. of dotted IinesQparts of the connecting rod being broken away;

pneumatic or other fluid Fig. 2 shows a fragmentary section through the adjustment sleeve, being taken on the line 2 -2 of Fig. 1, "looking in the direction scale Fig. 3 shows a the inner pivoted end of the door check, being on enlarged scale as compared-t0 F ig. l;-

Fig. at shows a plan viewof the-entire of'the arrows and not enlarged fragmentary plan view of i door check in more or less diagrammatic form and on smaller scale the other figures;

Fig. 5 shows a side elevation of the outer' or swinging end portion of the door check, being on enlarged scale as compared to Fig. l;and Fig. 6 shows an end view corresponding toFigf). '1

I the drawings, I have illustrated the door check as applied to adoor 7 working in the casing 8. The door check itself includes a tubular cylinder 9 having the inner pivoted headlO and'the outer swinging head 1.1. The head 10 is pivoted to the door'casing at the point'12. For this purpose, use may be made of a bracket 13 secured to:

the casing and having the outwardly jpro jecting lug 14-. j Y To the upper portion of the door itself is connected a reach rod 15.-- This reach rod has itsouter endcurvedup and around as i at 16 and pivotally connected to the door check at the point 17in the manner to be presently explained. Inorder to adjust the parts, thereach rod 15 may have'its body as compared to j portion 18 locat'ed within the tubular bracket 1 19 secured to'the door by means 'ofthe' plate 20; and a set screw 21 serves as a means for locking the reach rod to thetubular bracket 19 at any desired position of i adjustment.

lVithin the cylinder 9 thereoperates the This plunger is, connected to plunger 22';

the piston rod 23 whichworks through-the swinging'head 11. Thereach rod connectsv to the piston'r od at the pivotal point17" previously 'referred' to.

A spring 24 is. interposed" between the plunger 22 and the abutment 25. This abut ment is carried; by a sleeve .26 .which is;

threaded through the swinging head 11 and may be moved in and out inorder to adjust the position of the abutment 25. In this be adjusted.

way the compression of thespring. may

provide the necessary pressure for normally,

The sleeve 26 has an enlarged head 27 wh'ch is-socket'ed to receive a packing gland 28. This packing gland is normally forced down bv means of the cap screw 29 in the well known manner.

The pivoted head 10 is provided with an.

air chamber 30 communicating with the outside atmosphere by means of an opening 31., and a port 32 provides communication between the chamber 30 and the interior of the cylinder 9; A valve 33 normally seats; against the'inner face of the-port 32 to close thesame. This valve is provided with the pin 34 reaching into the air chamber 30 and having; anenlarged head 35 against which seats a spring 36. The inner end of said sprmgbearsagainst a cross bar 37, so as to holdingthe valve 33 in the closed position.

'lVhen the plunger- 22 is drawn. inwards against the force of the spring 24: during the opening of the door, the air flows into the cylinder through the port 32 and past the valve Said valve then seats and the plunger- 22 can notmo-ve backwards except by compressing the air, unless said air is allowed to flow out from thecylinder.

l have provided another air valve 38 in communication with the innerend of the cylinder by means-of ai port 39. Said valve 38' maybe rocked by means of a lever 40 and against the torceot a spring 41. When the level-stands in the normal position, as indicated by said spring, the valve is fully closed and the plunger is thus prevented front moving, back within the cylinder more than a limited distance.

I, A valve 42 works within the port 31. This valve isconnected' to a. rock arm 43p1voted to the opening of the door, the air behind it must either leave the cylinder or be compressed. The air leaving or entering the back side of the cylinder is controlled by means of a valve 47 connected to the back side of the cylinder by means of a port 48. The valve at? may be rocked by means of a lever arm a9, a spring 50 normally tending to draw said lever arm over in the manner showninFig ti, so as to fully close the valve.

Vvlienthefvalve is so closed the air is drawn in the back side of the cylinder and heavy resistance is thus interposedito the movement of the plunger.

I haveprovided means for controlling all of the valves 3'8, 42' and 47. from a distant point and in very convenient' manner by This is the normal condition.

mean of. a person located on that-sideof the door which is to be protected against; intrusion. This means, in the arrangement illustrated, includes an operating lever 51 pivoted to the door casing at the point 52. Said lever may be set into any one of a number of different positions by means of a pin passed through a: hole 53 in the lever and through any selected one of a number of holes 5st in a stationary segment. Thelever is connected tothe various. valves by means of the cords 61-, 62 and 63which connect to the valves 38, 42 and 47 respectively. These cords pass over suitable pulleys whose positions and mountings will naturally be dictated largely according to the particular re quirements of the installation.

As long as the operating lever 51. stands'in the position illustrated in F i 1,,all ofthe valves are in: the closed position, so that the checkv is effectively locked againstopening the door more than a very slight distance.

Inor-der to lock the valves 38- and 47 normally in this osition,lhave provided'the pins 55 and 56 which are norn'iallyspring pressed by the springs 5'7 and-'58i1mto such positions as to interfere w-iththe opening. movements of their respective valves. The cords 59 andGO connect said pins to the operating lever 51,50 that they will be withdrawn at the same time that an effort is made toopen-the valves and in order to permitthe valves to be opened. r

While I have herein shownand described only a single. embodiment of the features of my present invention, still I do not limit myself to thesaid embodimente-Xceptas I may do so in the claims:

I claim: g r

1-. In a device of the class described, the combination of a cylinder, a pivotal mount .ing for one end thereof, a plunger. working; within said cylinder, a piston rod connected to said plunger and working through the other endof' the cylinder, ajstufling boxfor the piston rod, an adjustable sleeve sur- I'OIIHdIHg the piston rod and extending through said end of the cylinder to the ini terior thereof, a spring interposed between the inner end of said sleeve andplunger, whereby. the pressure on said spring may be adjusted by adjustment of the sleeve,-an air chamber in communication with, the pivotedf end of the cylinder, there being a port es tablishing communication between said air chamber and the outside atmosphere, a valve controlling said port, a valve interposed between the-air chamber and. theinner end of the cylinder and serving to, permit the free movement of aintrom the air chamber into the cylinder while preventing. backward movement of said air from thecylinder, anotlierJvalve controlling directcommunica tion'from the pivoted end of the cylinder and to the outside atmosphere, another valve cont-rolling direct communication from the swinging end of the cylinder to the outside atmosphere, means for normally retaining all of the valves in closed position, and means under the control of the operator permit-ting the valves to be opened a predetermined amount, substantially as described.

2. In a device of the class described, the combination of a. cylinder, a pivotal mounting for one end thereof, a plunger working within said cylinder, a piston rod connected to said plunger, and working through the other end of the cylinder, a spring interposed between the plunger and the head of the cylinder, an air chamber in communication with the. pivoted end of the cylinder, there being a port establishing communication between said air chamber and the outside atmosphere, a valve controlling said port, a valve interposed between the air chamber and the inner end of the cylinder and serving to permit the free movement of air from the air chamber into the cylinder while preventing backward movement of said air from the cylinder, another valve controlling direct communication from the pivoted end of the cylinder to the outside atmosphere, another valve controlling direct communication from the swinging end of the cylinder to the outside atmosphere, means normally retaining all of the valves in closed position, and means under the control of the operator permitting the valves to be opened a predetermined amount, substantially as described. v

3. In a device of the class described, the combination of a cylinder, a pivotal mounting for one end thereof, a plunger working within said cylinder, a piston rod connected to said plunger and workin'g through the other end of the cylinder, a spring interposed between the plunger and the head of the cylinder, an air chamber in communica-. tion with the pivoted end of the cylinder, there being a port establishing communication between said air chamber and the outside atmosphere, a valve controlling said port, a. valve interposed between the air chamber and the inner end of the cylinder and serving to permit the free movement of air from the air chamber into the cylinder while preventing backward movement of said air from the cylinder, another valve controlling direct communication from the pivoted end of the cylinder to the outside atmosphere, another valve controlling direct communication from the swinging end of the cylinder to the outside atmosphere, and means under the control of the operator permitting the valves to be opened a predetermined amount, substantially as described.

4. In a device of the class described,-the comb-inationof a cylinder, a pivotal mounting for one end thereof, a plunger working within said cylinder, a piston rod connected to said plun'ger and working through the other end of the cylinder, an air chamber in communication with the pivoted end of the cylinder, there being a port establishing communcation'between said air chamber and the outside atmosphere, a valve controlling said port, a valve interposed between the air chamber and the inner end of the cylinder and serving to permit the, free movement of air from the air chamber into the cylinder while preventing a backward movement of said air from the cylinder, an:

other valve controlling direct communication from the pivoted end of the cylinder to the outside atmosphere, another valve controlling direct communication from the swinging end of the cylinder to the outside atmosphere, and means under the control of the operator permitting the valves to be opened a predetermined amount, substan tially as described.

5. In a device of the class described, theside atmosphere, and means under the con I trol of the operator permitting the valves to be'opened a predetermined amount, substantially as described.

7 ADOLPH JAGMIN. 

